Natural and Fe(II)-induced reduction of hexavalent chromium in soil

Alja Margon, Massimiliano Valentini, Claudio Mondini, Tania Sinicco, Paolo Sequi, Liviana Leita

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Abstract

In this study the influence of iron sulphate (FeSO4) on the dynamics of Cr(VI) - Cr(III) reduction in Cr(VI) spiked soil was evaluated, together with the concomitant assessment of the effect of the different treatments on soil microbial biomass size and activity. The results indicate that during the incubation period, the concentration of Cr(VI) in soil decreased over time, thus evidencing a natural attenuation capacity of soil towards Chromate reduction. However, soil microbial biomass and respiration rate were both negatively affected by the presence of Cr(VI), and did not recover during the experiment. Soil amendment with FeSO4 increased the Cr(VI) reduction rate and mitigated its negative effect towards soil microbial biomass and activity.

Original languageEnglish
Pages (from-to)2865-2869
Number of pages5
JournalFresenius Environmental Bulletin
Volume23
Issue number11A
Publication statusPublished - 2014

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Keywords

  • Chromate reduction
  • Hexavalent chromium
  • Iron sulphate
  • Soil microbial biomass

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

Cite this

Margon, A., Valentini, M., Mondini, C., Sinicco, T., Sequi, P., & Leita, L. (2014). Natural and Fe(II)-induced reduction of hexavalent chromium in soil. Fresenius Environmental Bulletin, 23(11A), 2865-2869.